Simplify 1/x-3+4/x divided by 4/x-1/x-3

Simplify the expression and find the missing terms. the simplest form of has in the numerator and in the denominator.

How is working backward similar to solving an equation?

Prove the divisibility of the following numbers: 25^9 + 5^7 is divisible by 30.also, read as (25 to the power of 9) + (5 to the power of 7) is divisible by 30. blank x 30what is the blank? ( it should be expressed in exponent form)